Ferroelectric improvements of (Pb,Ca)TiO3 thin films M.L. Calzada, R. Jimenez, P. Ramos, M.J. Martin and J. Mendiola J. Phys. IV France, 08 PR9 (1998) Pr9-53-Pr9-56 DOI: 10.1051/jp4:1998907